The iCare Mini is an integration of both a battery and a tank in one unit, which is much more convenient to carry. It includes a 1.3ml tank and a 320mah battery. And the airflow can be adjusted by rotating the airflow control ring on the air pipe. With a remarkably small size, you could hold the little kit in hand or put it in pocket with ease. You can easily check the battery level when vaping by a simple glance at the color of the LED.